Xee is an streamlined and convenient image viewer and browser. It is similar to Mac OS X's Preview.app, but lets you easily browse the entire contents of folders and archives, move and copy image files quickly, and supports many more image formats. The open source version is 2.2, CocoaBob did some improvements to support retina display.
🍻 Default formulae for the missing package manager for macOS (or Linux)
KeePassXC Browser Extension
:snake: Complete C99 parser in pure Python